Crossing the limits of 316L steel fabricated by powder bed fusion by thermomechanical post-processing
Methods of laser powder bed fusion (LPBF) are popular although LPBF components feature issues negatively affecting their mechanical properties and corrosion behaviour. Post-processing of LPBF materials by deformation treatments can reduce/eliminate printing defects and enhance their performance. The...
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Elsevier
2025-05-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127525003934 |
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| author | Radim Kocich Lenka Kunčická Peter Minárik |
| author_facet | Radim Kocich Lenka Kunčická Peter Minárik |
| author_sort | Radim Kocich |
| collection | DOAJ |
| description | Methods of laser powder bed fusion (LPBF) are popular although LPBF components feature issues negatively affecting their mechanical properties and corrosion behaviour. Post-processing of LPBF materials by deformation treatments can reduce/eliminate printing defects and enhance their performance. The study examines the effects of post-processing of LPBF AISI 316L steel workpieces, performed by the intensive plastic deformation method of rotary swaging, on the microstructures, mechanical properties, and corrosion behaviour. The results showed that the applied post-processing introduced grain refinement (cryogenic swaging to the ultra-fine scale) and grain size homogenization, as well as generally enhanced the resistance against corrosion and increased Vickers microhardness of the LPBF steel. The increased corrosion resistance of the cryo swaged sample was, most probably, primarily caused by the formation of {111}<110> shear fibre texture, while for the hot swaged sample, the increased corrosion resistance could primarily be attributed to the recrystallized microstructure. Hot compression testing revealed that the hot swaged sample featured higher activation energy for recrystallization than the cryo swaged one. On the other hand, the energy accumulated within the ultra-fine grained cryo swaged sample, due to aggravated plastic flow during processing, promoted the development of dynamic recrystallization during the hot compression testing. |
| format | Article |
| id | doaj-art-5ec0b84eae684bfea8be2689a2295e95 |
| institution | OA Journals |
| issn | 0264-1275 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-5ec0b84eae684bfea8be2689a2295e952025-08-20T02:17:33ZengElsevierMaterials & Design0264-12752025-05-0125311397310.1016/j.matdes.2025.113973Crossing the limits of 316L steel fabricated by powder bed fusion by thermomechanical post-processingRadim Kocich0Lenka Kunčická1Peter Minárik2Department of Metallurgical Technologies, Faculty of Materials Science and Technology, VŠB Technical University of Ostrava, 17. Listopadu 2172-15 Ostrava, CZ, Czech RepublicDepartment of Metallurgical Technologies, Faculty of Materials Science and Technology, VŠB Technical University of Ostrava, 17. Listopadu 2172-15 Ostrava, CZ, Czech Republic; Corresponding author.Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 121 16 Praha 2, Czech RepublicMethods of laser powder bed fusion (LPBF) are popular although LPBF components feature issues negatively affecting their mechanical properties and corrosion behaviour. Post-processing of LPBF materials by deformation treatments can reduce/eliminate printing defects and enhance their performance. The study examines the effects of post-processing of LPBF AISI 316L steel workpieces, performed by the intensive plastic deformation method of rotary swaging, on the microstructures, mechanical properties, and corrosion behaviour. The results showed that the applied post-processing introduced grain refinement (cryogenic swaging to the ultra-fine scale) and grain size homogenization, as well as generally enhanced the resistance against corrosion and increased Vickers microhardness of the LPBF steel. The increased corrosion resistance of the cryo swaged sample was, most probably, primarily caused by the formation of {111}<110> shear fibre texture, while for the hot swaged sample, the increased corrosion resistance could primarily be attributed to the recrystallized microstructure. Hot compression testing revealed that the hot swaged sample featured higher activation energy for recrystallization than the cryo swaged one. On the other hand, the energy accumulated within the ultra-fine grained cryo swaged sample, due to aggravated plastic flow during processing, promoted the development of dynamic recrystallization during the hot compression testing.http://www.sciencedirect.com/science/article/pii/S0264127525003934316L stainless steelLaser powder bed fusionRotary swagingElectrochemical corrosionMicrostructure |
| spellingShingle | Radim Kocich Lenka Kunčická Peter Minárik Crossing the limits of 316L steel fabricated by powder bed fusion by thermomechanical post-processing Materials & Design 316L stainless steel Laser powder bed fusion Rotary swaging Electrochemical corrosion Microstructure |
| title | Crossing the limits of 316L steel fabricated by powder bed fusion by thermomechanical post-processing |
| title_full | Crossing the limits of 316L steel fabricated by powder bed fusion by thermomechanical post-processing |
| title_fullStr | Crossing the limits of 316L steel fabricated by powder bed fusion by thermomechanical post-processing |
| title_full_unstemmed | Crossing the limits of 316L steel fabricated by powder bed fusion by thermomechanical post-processing |
| title_short | Crossing the limits of 316L steel fabricated by powder bed fusion by thermomechanical post-processing |
| title_sort | crossing the limits of 316l steel fabricated by powder bed fusion by thermomechanical post processing |
| topic | 316L stainless steel Laser powder bed fusion Rotary swaging Electrochemical corrosion Microstructure |
| url | http://www.sciencedirect.com/science/article/pii/S0264127525003934 |
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